The expulsion of a person from his native land by official decree(noun)

A person banished or living away from his home or country; expatriate(noun)

To expel from home or country, esp by official decree as a punishment; banish(verb)

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Use "exile" in a sentence

"The Prophet said, _Islam began in exile and it will end in exile_. ""

"The cheney presidency in exile is giving us a taste of what unfettered political power has to do when they attempt to defend their promotion of uncontrolled big business and profit taking during an unnecessary war of choice."

"Palmer, a journalist, first learned about these witches in exile from a 2004 human rights report."